There will also be barefoot skiing demonstrations along with a junior classs and an F4 tunnel boat demonstration.

Troy Marland will be chasing a hat-trick of world titles in his Blown Alcohol Displacement (BAD) boat Madness. Last year Marland set the world speed record in the unlimited class.

However, promoter Tony Walsh said competition in this class will be strong, with Darryl Quinn in Bad Influence and Dean Barry in She's the Culprit expected to push Marland.

Marland warmed up for this weekend by dominating Taree Aquatic Powerboat Club's Easter Classic this year.

Walsh added that there will be 10 boats in the 6.0 litre class and this will be one of the highlights of the program.

"They're the 10 fastest 6 litre boats in the country,'' he enthused.

This is only the second time there has been a world championship in the class, with Chris Whalan winning the last title decided in 2012.

Whalan will be a starter this weekend in Sacrifice. Marland will pilot Sick Puppy.

"Every entrant has the opportunity to win and it will be tough worlds for sure,'' Walsh said.

He added the SST120 outboard tunnel class provides dock starts with more than 10 boats heading to the first corner together.

Races will be over 15 laps.

There will be four GP Hydros led by current world grand prix champion Grant Harrison, who is no stranger to racing here.

Wayne Smith in GP1, Matt Ferris in Tattoo and Ian Bryant in Mathemagic will also contest the class.

A briefing and all the heat and poll draws which will take place at 6pm today in the World's Fastest Bar licensed marquee in the general admission area at Endeavour Place. All teams will be there and Walsh said the public is welcome to attend.

"The weather forecast is perfect and we're looking forward to a great weekend of racing on the Manning,'' he added.